Metal column



UNITED STATES PAT NT OFFICE.

EDWARD M. BUTZ, OE ALLEGHENY, PENNSYLVANIA.

MET-AL COLUMN, GIRDER, OR PILASTER.

SPECIFICATION forming part of Letters Patent No. 304,786, dated September 9, 1884.

Application filed January 10I 1884. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD M. BUTZ, a citizen of the United States, residing at Allegheny, county of Allegheny, State of Pennsylvania, have invented or discovered a new and useful Improvement in Metal Columns, Pilasters, or Girders; and I do hereby declare the following to be a full, clear, concise, and exact description thereof, reference being had to'the accompanying drawings, making a part of this specification, in whichlike letters indicating like parts Figure 1 is a perspective section of a column embodying my invention, and Fig. 2 a plane transverse section through the same.

My invention relates to the construction of metal supporting members for buildings, bridges, and other structural uses; and my improvement consists in a series of rolledmetal plates, of section herein shown and de scribed, united by bolts or rivets, and constituting a composite column, pilaster, or girder,

as hereinafter fully set forth.

To carry out my invention I form of rolled iron or steel four side plates, a a a a, a main diagonal plate, I), and two auxiliary plates, 0

c. The transverse section of the side plates, a, r

is that of a plane body portion with an outwardly-inclined flange at each of its sides.

The main diagonal plate I) is plane from end pilaster, or girder, the auxiliary diagonal plates 0 are secured centrally by bolts or rivets to the main diagonal plate I) on opposite sides diagonal plate, and two lines of diagonal brac ing being provided. If a column whose circumscribing figure is a square is desired, as in the instance shown, all the side plates, a, are

formed of equal width, and their flanges are equally inclined, and in the formation of a column whose circumscribing figure is a rectangle one pair of side plates is made'of greater width and provided with flanges of greater outward inclination than the other pair.

I claim herein as my invention- A rolled-metal column, pilaster, or girder composed of four side plates, each having a plane body and an outwardly-inclined flange at each of its sides, a main diagonal plate truly plane,and two diagonal plates, each having a plane body and a flange on one of its sides, said members being united by bolts or rivets, substantially as set forth:

In testimony whereof I have hereunto set my hand.

EDWARD M. BUTZ.

Witnesses:

J. SNoWnEN BELL, R. H. WHrrrLEsEY. 

